Told me it was the ATO, gave a name with official title and said either I or my solicitor need to ring a number and if I ignored this I would suffer the legal consequence.

Scam. Left message saying "Routine solicitor, extremely urgent"

Caller: Dennis Gray

Seems like a scam.

Voice message (translated to text): Hi, your routine (?) solicitor of record. To call us back. The issue at hand is extremely time sensitive. This is officer(?) Dennis Grey.

pretending as ATO, threatening of legal action if i don't call back